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authorPaul E. McKenney <paulmck@linux.ibm.com>2018-12-10 20:44:52 +0300
committerPaul E. McKenney <paulmck@linux.ibm.com>2019-01-26 02:37:10 +0300
commit3a6cb58f159e64241b2af9374acad41a70939349 (patch)
treeada940f453392a61ee945b23974647841ee65700 /block/blk-rq-qos.c
parent0d8a9ea9764a0e34e17e3b80a2be3855de239d6e (diff)
downloadlinux-3a6cb58f159e64241b2af9374acad41a70939349.tar.xz
rcutorture: Add grace period after CPU offline
Beyond a certain point in the CPU-hotplug offline process, timers get stranded on the outgoing CPU, and won't fire until that CPU comes back online, which might well be never. This commit therefore adds a hook in torture_onoff_init() that is invoked from torture_offline(), which rcutorture uses to occasionally wait for a grace period. This should result in failures for RCU implementations that rely on stranded timers eventually firing in the absence of the CPU coming back online. Reported-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Signed-off-by: Paul E. McKenney <paulmck@linux.ibm.com>
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